[SDL] suface flags question

Brian brian.ripoff at gmail.com
Tue Jul 17 02:09:18 PDT 2007


Hi.

A lot of the SDL flags may not be available. SDL tries to give you as
close to what you asked for. However, on linux I believe you cannot
get a hardware surface without running as root (which is a bit much ),
and on windows I think you can only get a hardware surface in
fullscreen mode. The video drive affects the flags available too, it's
different under GDI and DirectDraw. I don't know what SDL_HWACCEL
does, I think its probably an internal flag you shoudln't be setting.

On 17/07/07, Bob Self <bobself at charter.net> wrote:
>
> I'm creating a SDL_Surface with these flags:
> unsigned long flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL | SDL_DOUBLEBUF;              // 0x40000115
> surface = SDL_SetVideoMode(1200, 800, 0, flags);
>
> I'm then looking at the surface flags and see that it is this:
> surface->flags = 0x00000010
>
> Why isn't surface->flags equal to flags? I thought this should be 0x40000115
> instead of 0x00000010.


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